Observations on the recorded ground motion due to P, PcP, S, and ScS
- Creators
- Ergin, Kazim
Abstract
The recorded motion of a point at the surface of the earth, in the vertical plane of propagation, upon the arrival of PcP and ScS, as well as of the direct P and S waves, is reproduced from the seismograms of the vertical, N-S and E-W component, long-period Benioff seismographs. It is found that P and PcP produce a back-and-forth vibration in the general direction of the incoming ray, and that S and ScS produce a motion the largest displacement of which is approximately perpendicular to the ray. PcP motion starts close to the vertical, but its horizontal component later increases. A minor S phase arriving close to and after PcP and a minor P phase arriving close to and before ScS are observed. The effect of these minor phases on the smaller component of the ground vibration caused by the waves reflected from the mantle-core boundary is discussed.
Additional Information
Copyright © 1952, by the Seismological Society of America. Manuscript received for publication September 27, 1950; withheld temporarily from publication at request of author. The author is indebted to Professor Beno Gutenberg for recommending the problem and for his constructive criticism, and also to Professors C. F. Richter and H. Benioff, who reviewed the final draft and made valuable suggestions.Attached Files
Published - 263.full.pdf
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Additional details
- Eprint ID
- 48099
- Resolver ID
- CaltechAUTHORS:20140806-124653097
- Created
-
2014-08-06Created from EPrint's datestamp field
- Updated
-
2023-05-19Created from EPrint's last_modified field
- Other Numbering System Name
- Caltech Division of Geological Sciences
- Other Numbering System Identifier
- 558